+1 for Protonmail. Also been hearing a lot of good things about ProtonVPN, although I haven't tried it yet myself.

Talking about "Confidential Mode", it's obviously complete nonsense, but many people will use it and have a false sense of security from it. It still amazes me just how many people think "private browsing" or "incognito mode" offers them some level of protection against tracking and spying, which it obviously doesn't. The same will be true of this, with people thinking it provides protection which it doesn't.

The "others can't copy or download it" is particularly disingenuous. This can literally be bypassed with a single key press - print screen.